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IP屬地：安徽
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[LeetCode]7. Reverse Integer整數(shù)反轉(zhuǎn)
Given a 32-bit signed integer, reverse digits of an integer. Example 1: ...
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[LeetCode]6. ZigZag ConversionZ 字形變換
The string "PAYPALISHIRING" is written in a zigzag pattern on a given nu...
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[LeetCode]5. Longest Palindromic Substring最長(zhǎng)回文子串
Given a string s, find the longest palindromic substring in s. You may a...
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一次同步方法的失敗與原因總結(jié)
synchronized關(guān)鍵字可以設(shè)置同步方法和同步塊，同步方法會(huì)對(duì)調(diào)用對(duì)象this上鎖，所有線(xiàn)程進(jìn)入前都需要獲取這個(gè)鎖，這里我拿一個(gè)錯(cuò)誤樣例來(lái)...
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java線(xiàn)程的狀態(tài)變換下面將會(huì)針這張圖對(duì)線(xiàn)程的狀態(tài)轉(zhuǎn)換來(lái)做解釋 在操作系統(tǒng)的課程中把線(xiàn)程大致分為了3個(gè)狀態(tài)1.就緒狀態(tài)（線(xiàn)程對(duì)資源上鎖，但未分配時(shí)間片，等待cpu分配...
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SQL語(yǔ)句訓(xùn)練16-20
16題目描述統(tǒng)計(jì)出當(dāng)前各個(gè)title類(lèi)型對(duì)應(yīng)的員工當(dāng)前薪水對(duì)應(yīng)的平均工資。結(jié)果給出title以及平均工資avg。CREATE TABLE sal...
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[LeetCode]4. Median of Two Sorted Arrays尋找兩個(gè)有序數(shù)組的中位數(shù)
There are two sorted arrays nums1 and nums2 of size m and n respectively...
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SQL語(yǔ)句訓(xùn)練11-15
11.題目描述獲取所有員工當(dāng)前的manager，如果當(dāng)前的manager是自己的話(huà)結(jié)果不顯示，當(dāng)前表示to_date='9999-01-01'。...
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[LeetCode]3. Longest Substring Without Repeating Characters無(wú)重復(fù)字符的最長(zhǎng)子串
Given a string, find the length of the longest substring without repeati...